Finding the Third Proportional to 143,064 and 221,172

Step by Step Solution

1. Step 1: Write the proportion equation
   143,064 : 221,172 = 221,172 : x
2. Step 2: Convert to fraction form
   143,064/221,172 = 221,172/x
3. Step 3: Cross multiply
   143,064x = 221,172 × 221,172
4. Step 4: Simplify right side
   143,064x = 48,917,053,584
5. Step 5: Solve for x
   x = 48,917,053,584/143,064
6. Step 6: Final answer
   x = 341,924.27